body {
    margin: 0;
    padding: 0;
    font: 12px/24px 宋体;
}
ul,ol,dl,li {
    list-style: none;
    margin: 0;
    padding: 0;
}
a {
    text-decoration: none;
}
a:visited {
    color: black;
}
a:hover {
    color: black;
}
h1 {
    margin: 0;
}
p {
    margin: 0;
}